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5 Commits

Author SHA1 Message Date
Devin Doucette
8c27714a84 DDC: Added ConvertLegacyCacheKey to construct new cache keys from legacy cache keys 
The function is shared with the legacy cache store to allow callers of the legacy API to migrate to the value API using this conversion function without invalidating existing cache keys.

#preflight 624c9ab68d1db441a913137e
#rb Zousar.Shaker

[CL 19630681 by Devin Doucette in ue5-main branch]
 2022-04-05 16:27:17 -04:00
Devin Doucette
d8c983bbe6 DDC: Optimized legacy cache key validation and shortening overhead 
- Validate and shorten legacy keys lazily.
- Change to ValueOnly mode for PakFile and Zen.

#preflight 623235998a6037989395baf2
#rb Zousar.Shaker
#rnx

[CL 19410386 by Devin Doucette in ue5-main branch]
 2022-03-16 15:28:29 -04:00
devin doucette
778a7d292b DDC: Added compression support to legacy cache values 
The cache stores can individually control their "legacy mode" now, which offers a choice of ValueOnly, ValueWithLegacyFallback, LegacyOnly.
- Using ValueOnly will forward every legacy request through the Value API, which compresses values by default and supports values larger than 2 GiB.
- Using ValueWithLegacyFallback behaves like ValueOnly, but misses from GetValue are forwarded to GetCachedData, and stored with PutValue if found.
- Using LegacyOnly will forward every legacy request through the Legacy API.

FLegacyCacheValue uses shared state to ensure that each value is compressed or decompressed at most once.

#jira UE-134381
#preflight 62054b430c64e1822f41231b
#lockdown Mark.Lintott
#rb Zousar.Shaker
#rnx

#ROBOMERGE-AUTHOR: devin.doucette
#ROBOMERGE-SOURCE: CL 18940270 in //UE5/Release-5.0/... via CL 18941016 via CL 18941392
#ROBOMERGE-BOT: UE5 (Release-Engine-Test -> Main) (v917-18934589)

[CL 18941401 by devin doucette in ue5-main branch]
 2022-02-10 14:57:42 -05:00
devin doucette
b412a532ed DDC: Added MakeResponse(EStatus) to the cache request types 
#rb Zousar.Shaker
#rnx
#preflight 61f1b88fc0033b39f89c8d84

#ROBOMERGE-AUTHOR: devin.doucette
#ROBOMERGE-SOURCE: CL 18744557 in //UE5/Release-5.0/... via CL 18744970 via CL 18745683
#ROBOMERGE-BOT: UE5 (Release-Engine-Test -> Main) (v903-18687472)

[CL 18745958 by devin doucette in ue5-main branch]
 2022-01-26 17:07:56 -05:00
devin doucette
3725815687 DDC: Added ILegacyCacheStore and folded the key length limit into the new FLegacyCacheKey 
This API adds a little bit of overhead but, in exchange:
- Offers a path to migrate to the new Value API.
- Offers a path to provide compression while falling back to the previous format.
- Offers a path to backends batching requests without consuming a worker thread.
- Avoids copying the value multiple times during async puts.

#rb Zousar.Shaker
#rnx
#preflight 61e0a32fed50181feb57c5d6

#ROBOMERGE-AUTHOR: devin.doucette
#ROBOMERGE-SOURCE: CL 18607028 in //UE5/Release-5.0/... via CL 18607056 via CL 18607101
#ROBOMERGE-BOT: UE5 (Release-Engine-Test -> Main) (v899-18417669)

[CL 18607126 by devin doucette in ue5-main branch]
 2022-01-13 17:30:44 -05:00